Answer: answer is C
Step-by-step explanation:
for find x
(5x+30)+5x=90
5x+30+5x=90 add like terms
after,
10x+30=90
10x+30-30=90-30
10x/10=60/10
x = 6
to obtain answer as C
it mean
(5x+30)+5x=90
(5(6)+30)+5(6)=90 we know x=6 so add 6 to x and multiply and obtain answer is correct!
30+30+30=90
It is not factorable. Factors of 21 are. 21 and 1
7 and 3. None of those add up to 12
Answer: B
The letters have the same positions in the figure names.
That is also equal to (9÷1)÷3, so it will be the same as 9÷3. Therefore, the answer is 3.